When particles ______________________, they move repeatedly back and forth around their positions.
Oscillate
__________________________ travel and transfer energy from one position to another through a medium.
Mechanical waves
__________________________ is a wave in which the particles in a medium oscillate parallel to direction of the wave and energy transfer.
Longitudinal wave
__________________________ travel from source through vacuum.
Electromagnetic waves
The frequency of a series of water waves is 10 Hz. The distance from one trough to another is 2 m. What is the speed of the wave series?
20 m/s
What does LED stand for?
Light-emitting diode
If electrons are lost from their atom, they move freely and cause _______________.
Electric current.
Name physicist who discovered Ohm's law.
Georg Simon Ohm
What do we call a path in which current can flow?
Electric circuit.
